Cummins ISB 4.5 Parts for Australia - Rebuild Kit Section

Cummins ISB 4.5 Overhaul Kits & Engine Parts Catalog

Engine Overview: Cummins ISB 4.5

The Cummins ISB 4.5 engine is a highly efficient, four-cylinder, turbocharged diesel engine known for its durability and performance in a variety of industrial and commercial applications. With its compact design, the ISB 4.5 offers robust torque and horsepower output suitable for power generation equipment, off-highway machinery, and select on-road vehicles. Built to meet stringent emissions regulations while delivering optimal fuel economy, the ISB 4.5 is favored by fleet managers and equipment operators worldwide.

At Diesel Pro Power, we support over 40,000 satisfied customers with OEM-quality and aftermarket Cummins parts. Whether you are performing routine maintenance or a full engine overhaul, our parts catalog ensures fast shipping, expert customer support, and reliable components tailored for your ISB 4.5 engine.

ISB 4.5 Overhaul Kits

Cummins Rebuild Kit for ISB 4.5 - 1-Piece Piston Design

Our primary overhaul kit for the Cummins ISB 4.5 is engineered to restore factory performance. This kit includes components with standard size pistons and rings and is designed specifically for ISB 4.5 engines with CPL numbers 1982, 1989, 8529, and 8781.

• Piston Type: 1-piece piston

• Fitment: Designed for standard bore applications

• Compression Ratio: Matches OEM design specs for consistent performance

What Does Compression Ratio Mean? The compression ratio represents the volume difference between the cylinder's maximum and minimum capacity. In diesel engines, a higher compression ratio translates to more efficient combustion and increased thermal efficiency. The ISB 4.5 typically uses a ratio that balances performance and emissions compliance.

Supporting Components for ISB 4.5 Engine Rebuilds

A successful engine rebuild goes beyond pistons and rings. Supporting components are essential to ensuring your ISB 4.5 runs at peak performance for thousands of hours post-repair.

Piston Cooling Nozzles

• Part: Nozzle to cool pistons for Cummins B, ISB, and QSB series

• Description: Designed to spray oil underneath the piston crown, maintaining optimal piston temperature and preventing thermal fatigue.

• Requirement: One nozzle per piston

Crankshaft Seal Kits

Front Crankshaft Seal Kit

• Includes: Front seal and sleeve

• Purpose: Prevents oil leaks around the crankshaft pulley area

Rear Crankshaft Seal Kit

• Includes: Rear seal (double-lip) and sleeve

• Application: For engines with wet clutch housings

ISB 4.5 Filtration Components

Proper filtration ensures long engine life by removing contaminants from fuel and oil systems.

Fuel Filtration

Cummins Fuel Filter

• Dimensions: 2.813" diameter x 4.57" height

• Thread Size: M16 x 1.5 - 6

Fuel Filter & Water Separator

• Dimensions: 3.02" diameter x 5.62" height

• Thread Size: M16 x 1.5 - 6H INT

• Function: Separates water and contaminants from diesel fuel

Oil Filtration

Cummins Oil Filter

• Type: Spin-on

• Dimensions: 3.66" diameter x 5.35" height

• Thread Size: 1-16 UN

Valve Train and Calibration Tools

Feeler Gauge for Valve Calibration

• Range: 0.002" to 0.025"

• Purpose: Used for setting valve lash to factory specs, critical for maintaining timing and performance

Engine Assembly Tools for Cummins ISB 4.5

Piston Ring Installation Tool

• Application: Compatible with Detroit Diesel and Cummins pistons

• Function: Allows for safe installation of piston rings without distortion

Fuel Filter Removal Wrench

• Size Range: 3-7/16" to 3-3/4"

• Application: Ideal for removing tight or oil-covered filters

Oil Filter Removal Wrench

• Size Range: 4-21/32" to 5-5/32"

• Fitment: Works with Detroit Diesel, Cummins, and Caterpillar engines

Cooling System & Sensors

Radiator Cleaner

• Shipping: Ground only (USA & Canada)

• Use: Flushes scale, rust, and contaminants from cooling system to improve thermal performance

Temperature Switch

• Activation Temp: Closes at 205°F

• Thread Size: 1/2" NPT

• Compatibility: Works with Cummins, Caterpillar, and Detroit Diesel

Instrumentation & Monitoring

Gauges for ISB 4.5 Applications

Mechanical Gauges

• Engine oil pressure, coolant temperature, and fuel pressure

Mechanical Gauges with Alarm

• Adds alert functionality for abnormal engine conditions

Electric Gauges

• Available in both 12V and 24V configurations

Why Diesel Pro Power?

• Trusted Worldwide: Over 40,000 satisfied customers

• Fast Global Shipping: From our centrally located warehouse

• Expert Support: Real humans ready to help with fitment and install questions

• OEM & Aftermarket Options: Only the highest-quality rebuild components

Conclusion

Whether you're looking to fully overhaul your Cummins ISB 4.5 engine or replace key components like filters, seal kits, or gauges, Diesel Pro Power has you covered. Every part in our catalog is selected to provide reliable, long-term performance for industrial-grade diesel engines.

With standard-size rebuild kits designed to fit multiple CPL configurations and supporting components that cover the entire engine system—from crankshaft seals to valve tools—you'll find everything you need for a complete, efficient rebuild in one place.

Continue browsing or contact our team for expert guidance on your ISB 4.5 rebuild project.